Black Panther is heading to our cinemas in 2018, but we've just received a hint that there could be more than one big cat-inspired superhero stalking across Ryan Coogler's Marvel movie.

During Disney's CinemaCon panel, it was revealed that Letitia Wright (Doctor Who, Humans) – who was announced for a mysterious role in the film last year – will be playing Shuri, the sister to Chadwick Boseman's T'Challa.

Shuri is best known in Marvel's comics for replacing her brother (well, technically half-brother) in the hereditary role of Black Panther when he was left comatose, as well as becoming queen of Wakanda.

King T'Chaka's youngest daughter is portrayed as an ambitious woman who had hoped to become the first female Black Panther before she was beaten to the role by her brother.

We don't know if the film will give her a chance to dress up in the black cat costume, but if Wright's portrayal of her follows the comic book version at all she will be a skilled and ambitious warrior.

The film is expected to see Boseman's Black Panther face off against Andy Serkis's Ulysses Klaue/Klaw (first introduced in Avengers: Age of Ultron) and exiled Wakandan Erik Killmonger (Michael B Jordan).